#include <stdio.h>
#include <string.h>
#include "pico/stdlib.h"
#include "hardware/gpio.h"
#include "pico/binary_info.h"

const uint LED_PIN = 0;

// Define hash table for letter matrix 

#define TABLE_SIZE 256 

typedef struct {
    char key;
    int l_value;
    int r_value;
} Entry;

typedef struct {
    Entry entries[TABLE_SIZE];
    int count;
} LetterMatrix;

void init_matrix(LetterMatrix* mt) {
    mt->count = 0;

    mt->entries[mt->count++] = (Entry){'a', 3, 16};
    mt->entries[mt->count++] = (Entry){'b', 4, 15};
    mt->entries[mt->count++] = (Entry){'c', 1, 9};
    mt->entries[mt->count++] = (Entry){'d', 2, 13};
    mt->entries[mt->count++] = (Entry){'e', 2, 14};
    mt->entries[mt->count++] = (Entry){'f', 1, 13};
    mt->entries[mt->count++] = (Entry){'g', 1, 16};
    mt->entries[mt->count++] = (Entry){'h', 4, 16};
    mt->entries[mt->count++] = (Entry){'i', 5, 13};
    mt->entries[mt->count++] = (Entry){'j', 4, 13};
    mt->entries[mt->count++] = (Entry){'k', 5, 14};
    mt->entries[mt->count++] = (Entry){'l', 5, 16};
    mt->entries[mt->count++] = (Entry){'m', 5, 10};
    mt->entries[mt->count++] = (Entry){'n', 5, 9};
    mt->entries[mt->count++] = (Entry){'o', 5, 18};
    mt->entries[mt->count++] = (Entry){'p', 6, 17};
    mt->entries[mt->count++] = (Entry){'q', 3, 18};
    mt->entries[mt->count++] = (Entry){'r', 1, 14};
    mt->entries[mt->count++] = (Entry){'s', 2, 18};
    mt->entries[mt->count++] = (Entry){'t', 1, 18};
    mt->entries[mt->count++] = (Entry){'u', 4, 14};
    mt->entries[mt->count++] = (Entry){'v', 1, 15};
    mt->entries[mt->count++] = (Entry){'w', 2, 16};
    mt->entries[mt->count++] = (Entry){'x', 2, 9};
    mt->entries[mt->count++] = (Entry){'y', 3, 15};
    mt->entries[mt->count++] = (Entry){'z', 4, 18};
    mt->entries[mt->count++] = (Entry){'1', 3, 13};
    mt->entries[mt->count++] = (Entry){'2', 3, 14};
    mt->entries[mt->count++] = (Entry){'3', 2, 15};
    mt->entries[mt->count++] = (Entry){'4', 2, 10};
    mt->entries[mt->count++] = (Entry){'5', 1, 10};
    mt->entries[mt->count++] = (Entry){'6', 1, 17};
    mt->entries[mt->count++] = (Entry){'7', 4, 17};
    mt->entries[mt->count++] = (Entry){'8', 4, 10};
    mt->entries[mt->count++] = (Entry){'9', 5, 17};
    mt->entries[mt->count++] = (Entry){'0', 5, 15};
    mt->entries[mt->count++] = (Entry){'ß', 6, 15};
    mt->entries[mt->count++] = (Entry){'+', 7, 14};
    mt->entries[mt->count++] = (Entry){'#', 7, 15};
    mt->entries[mt->count++] = (Entry){''', 6, 16};
    mt->entries[mt->count++] = (Entry){'.', 6, 9};
    mt->entries[mt->count++] = (Entry){'-', 7, 18};
    mt->entries[mt->count++] = (Entry){' ', 4, 9};
    mt->entries[mt->count++] = (Entry){'´', 6, 10};
};

// Lookup function to get left and right pin values for the letter
Entry* lookup(LetterMatrix* mt, char key) {
        for (int i = 0; i < ht->count; i++) {
        if (ht->entries[i].key == key) {
            return &ht->entries[i];
        }
    }
    return NULL; // Not found
};

// TODO: Implement special keys

int main () {
    bi_decl(bi_program_description("Blink"));
    bi_decl(bi_1pin_with_name(LED_PIN, "Onboard LED"));

    stdio_init_all();
    gpio_init(LED_PIN);
    gpio_set_dir(LED_PIN, GPIO_OUT);

    while (1) {
        gpio_put(LED_PIN, 1);
        sleep_ms(1000);
        gpio_put(LED_PIN, 0);
        sleep_ms(1000);
    }
    return 0;
}